var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var mongoose = require('mongoose');
var app = express();
var session = require('express-session')
// view engine setup
app.set('views', path.join(__dirname, 'views'));
//设置引擎，将.jade的文件用./common/jade处理
app.engine('.jade', require('./common/jade'));
app.set('view engine', 'jade');
// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
//配置session
app.use(session({
  secret: 'yy',
  resave: false,
  saveUninitialized: true
}));
//配置和缓存
global.config = require('./common/config');
global.cache = {};
require('./useRoutes')(app);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
    var err = new Error('Not Found');
    err.status = 404;
    next(err);
});
 
// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
    app.use(function(err, req, res, next) {
        res.status(err.status || 500);
        res.render('error', {
            message: err.message,
            error: err
        });
    });
}

// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
        message: err.message,
        error: {}
    });
});
if (!config.dbUser) {
    mongoose.connect('mongodb://' + config.dbAddress + '/' +config.dbName);
} else {
    mongoose.connect('mongodb://' + config.dbUser + ':' + config.dbPass + '@' + config.dbAddress + '/' +config.dbName);
}
module.exports = app;  
